The adidas PureBoost ‘Black and White’ keeps things crisp and simple, with a sock-like, gray and black knit upper that adapts to your foot. The single-piece construction allows for a slip-on fit, with lockdown provided by and external lacing system. The shoe's branding appears on the tongue and with offset tonal Three-Stripes on the side. Its innovative Boost midsole provides a springy response, while the Stretchweb outsole flexes with your step for an adaptive stride.